Elastic Email
Low-cost email API and SMTP relay with marketing features nearby.
Elastic Email offers both an Email API product for transactional sending and an Email Marketing product for campaigns. The API plan includes SMTP relay, templates, suppressions, tracking, inbound processing, webhooks, users, subaccounts, and custom rDNS on paid tiers. The free plan is primarily for testing because sending is limited.
An agent stack treats email as a two-way primitive. Inbound has to arrive as structured JSON a tool call can consume, sends have to be safe to retry when a model loop repeats itself, and every action needs an audit trail. A provider without inbound parsing only solves half the problem.
Against inbound parsing into tool calls and model-generated sends that must not duplicate, Elastic Email covers inbound parsing, webhook coverage, event stream, batch sending, SDK breadth, and multi-tenant support, and does not cover idempotency keys. Whether that gap matters depends on how central those are to the build.
- Inbound parsing: Yes
- Idempotency keys: No
- Webhooks: Yes
- Operating since: Not published
- Event stream: Yes
- Best published rate per 1,000: Tiers not published in comparable form
- Batch sending: Yes
- SDKs: node, python, php, java, dotnet
- Multi-tenant: Yes
Cost-efficient sender with authentication, tracking, suppression, inbound, and private IP options. Less differentiated on deliverability reputation than Postmark or SMTP2GO.
Cost-sensitive teams that want API, SMTP, templates, inbound, and subaccounts at a low entry price.
Teams choosing primarily on long-term deliverability reputation.
- › Low published entry price for 50,000 API emails
- › SMTP relay and HTTP API in the same plan
- › Inbound processing and webhooks included on the API plan
- › Unlimited users and subaccounts are listed on paid API pricing
- › Free plan is for testing and limited to sending to yourself
- › Brand is less associated with premium transactional deliverability
- › Product split between Email API and Email Marketing can complicate selection
Features at a glance
| API | Yes |
| SMTP | Yes |
| SDKs | node, python, php, java, dotnet |
| Webhooks | Yes |
| Templates | rich |
| React Email | No |
| Batch send | Yes |
| Scheduled send | Yes |
| Suppressions | Yes |
| Multi-tenant | Yes |
| Inbound parsing | Yes |
| Event stream | Yes |
| Idempotency keys | No |
| Dedicated IP | Yes |
Appears in rankings
13 Best Transactional Email APIs (2026), Tested
Low-cost API and SMTP relay with inbound and subaccounts, but less premium deliverability reputation.
8 Best Email Tools for High-Volume Sending (2026), Tested
Low entry pricing and API volume tiers make it a budget option when its feature set fits.
10 Best Email Tools for Multi-Tenant SaaS (2026), Tested
Unlimited users and subaccounts are listed on paid API plans, useful for reseller-style setups.
7 Best AWS SES Alternatives (2026), Tested
Low-cost API and SMTP relay with webhooks, inbound, and subaccounts.
9 Best SendGrid Alternatives (2026), Tested
Lower-cost API and SMTP relay if price matters more than brand recognition.